odoo16/addons/website_event_exhibitor/views/event_menus.xml

<?xml version="1.0"?>
<odoo><data>

    <menuitem id="menu_event_sponsor_type"
        name="Sponsor Levels"
        action="event_sponsor_type_action"
        parent="event.menu_event_configuration"
        groups="base.group_no_one"
        sequence="40"/>

</data></odoo>